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這裏是我生成矩形圖的代碼,我希望將x和y軸標記爲下面指定的名稱,而不會與標籤「Index」和「 NA「,如下所示。有什麼辦法可以刪除NA和索引標籤或指定我最初想要的標籤嗎?分別去除NA和索引標籤的X軸和Y軸
dat <- data.frame(x1=c(1,27,154.94056),
x2=c(27,154.94056,155.27056),
y=c(0.21294542,0.10480005,0.11760634))
> dat
# x1 x2 y
#1 1.0000 27.0000 0.2129454
#2 27.0000 154.9406 0.1048001
#3 154.9406 155.2706 0.1176063
with(dat,plot(NA,xlim=c(min(x1),max(x2)),ylim=c(min(y),max(y)+.15),type="n"))
with(dat,rect(x1,y,x2,y+0.1))
title(xlab="chrX Position", ylab="Divergence")